The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. However, please pay special attention to the
Volume
77A
Journal of Research of the National Bureau of Standards
Abstract
A new set of measurements of the spectrum of neutral thulium covering the range of 2513 A to 11750 A is given. The light source utilized for the observations was a microwave-excited thulium-iodide lamp. Second spectrum lines were recognized by comparing the output of this lamp with that of a 6A sliding spark. The results of Zeeman effect studies of these lines are included. Analysis of these new data led to the discovery of 348 new energy levels and provided revised values for the 142 already published. Measured Lande g factors are given for most of the levels.
Addeddate
2012-05-15 14:56:36
Cite
J. Res. Nat. Bur. Stand. Sec. A: Phys. Ch., Vol. 77A, No. 1, p. 1
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